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The tech world is full of self-made billionaires including the youngest,
At just 28 years old, Zuckerberg's
Despite this amazing accomplishment, Zuckerberg's net worth has drastically fallen since he took his company public last May.
In March 2012, Zuckerberg's net worth was $17.7 billion, but by September 2012 that number dropped to $9.4 billion. Today it has settled at $13.3 billion.
Zuckerberg is known to be very modest with his earnings, choosing to drive a common Acura sedan. In late 2012, he and his wife donated $500 million in stock to a Silicon Valley charity.